# HG changeset patch
# User Yaroslav Zhuravlev <yar@nginx.com>
# Date 1418839920 -10800
# Node ID ab0ebdd7ddac5fa31631ffcdd23b6c5bbd68a161
# Parent  90922e31756d0969cc81d10b4be40290638e6ce0
Documented variables support in the expires directive.

diff -r 90922e31756d -r ab0ebdd7ddac xml/en/docs/http/ngx_http_headers_module.xml
--- a/xml/en/docs/http/ngx_http_headers_module.xml	Tue Dec 16 17:22:42 2014 +0300
+++ b/xml/en/docs/http/ngx_http_headers_module.xml	Wed Dec 17 21:12:00 2014 +0300
@@ -10,7 +10,7 @@
 <module name="Module ngx_http_headers_module"
         link="/en/docs/http/ngx_http_headers_module.html"
         lang="en"
-        rev="6">
+        rev="7">
 
 <section id="summary">
 
@@ -33,6 +33,7 @@
 expires    0;
 expires    -1;
 expires    epoch;
+expires    $expires;
 add_header Cache-Control private;
 </example>
 </para>
@@ -142,6 +143,19 @@
 header fields.
 </para>
 
+<para>
+The last parameter value can contain variables (1.7.9):
+<example>
+map $sent_http_content_type $expires {
+    default         off;
+    application/pdf 42d;
+    ~image/         max;
+}
+
+expires $expires;
+</example>
+</para>
+
 </directive>
 
 </section>
diff -r 90922e31756d -r ab0ebdd7ddac xml/ru/docs/http/ngx_http_headers_module.xml
--- a/xml/ru/docs/http/ngx_http_headers_module.xml	Tue Dec 16 17:22:42 2014 +0300
+++ b/xml/ru/docs/http/ngx_http_headers_module.xml	Wed Dec 17 21:12:00 2014 +0300
@@ -10,7 +10,7 @@
 <module name="Модуль ngx_http_headers_module"
         link="/ru/docs/http/ngx_http_headers_module.html"
         lang="ru"
-        rev="6">
+        rev="7">
 
 <section id="summary">
 
@@ -33,6 +33,7 @@
 expires    0;
 expires    -1;
 expires    epoch;
+expires    $expires;
 add_header Cache-Control private;
 </example>
 </para>
@@ -141,6 +142,19 @@
 <header>Expires</header> и <header>Cache-Control</header> в заголовке ответа.
 </para>
 
+<para>
+В значении последнего параметра можно использовать переменные (1.7.9):
+<example>
+map $sent_http_content_type $expires {
+    default         off;
+    application/pdf 42d;
+    ~image/         max;
+}
+
+expires $expires;
+</example>
+</para>
+
 </directive>
 
 </section>